Paradise Lost 3: Purgatory is a 2011 documentary film and sequel to the films Paradise Lost: The Child Murders at Robin Hood Hills and Paradise Lost 2: Revelations. The three films chronicle the arrest, 18 year imprisonment, and eventual release of Damien Echols, Jason Baldwin, and Jessie Misskelley, otherwise known as the West Memphis 3. The films, directed by Joe Berlinger and Bruce Sinofsky, are considered to play a substantial role in generating publicity, awareness, and support for the innocence of the West Memphis 3. It aired on HBO on January 12, 2012.

This documentary by Joe Berlinger and Bruce Sinofsky details the murder trial of Delbert Ward. Delbert was a member of a family of four elderly brothers, working as semi-literate farmers and living together in isolation from the rest of society until William's death. A police investigation and Medical Examiner's autopsy suggested that Bill may not have died from natural causes and Delbert was arrested on charges of Second-Degree Murder. Under questioning by police, Delbert appears to have waived his rights and signed a confession, but this film suggests that he may not have been competent to do so. The film explores possible motives for the crime, from 'mercy-killing' (Bill was ill at the time) to progressively more bizarre hypotheses. It also shows how residents of the rural community of Munnsville, NY rallied to the support of one of their own residents (previously considered a social outcast), against what they felt were intrusive 'big-city' police and District Attorney tactics.